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Active touch sensor

A tactile sensor, active technology, applied in piezoelectric devices/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, electrical components, etc. , cumbersome lithography methods, etc., to achieve the effects of good sensitivity and response time, wide selection of materials, and simple preparation process

Active Publication Date: 2017-05-03
BEIJING INST OF NANOENERGY & NANOSYST
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AI Technical Summary

Problems solved by technology

[0003] Although a variety of tactile sensor development schemes have been proposed, most of them belong to the laboratory stage, and usually use high-cost nanomaterials, complex vacuum preparation techniques and cumbersome photolithography methods.
The preparation of commercial tactile sensing systems on a large scale remains a challenge

Method used

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Embodiment Construction

[0029] The triboelectric nanogenerator proposed by Professor Wang Zhonglin's research group provides a new idea for the preparation of active tactile sensing systems. The working principle of this generator is based on the coupling of friction electrification and electrostatic induction. Two polymer materials coated with electrodes and having different charging characteristics are pasted together, and mechanical deformation is generated under the action of external mechanical force, so that the two The materials rub against each other. Since the two materials have different electronic gain and loss capabilities, charge separation will occur on the contact surface of the two materials to form a built-in potential difference. The two plated electrodes generate induced charges on the surface through electrostatic induction, and are driven by the frictional electrostatic potential. A current flows through an external circuit. In addition to directly utilizing the triboelectric na...

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Abstract

The invention provides an active touch sensor. The active touch sensor comprises an insulation substrate, and a plurality of sensing units arranged on the insulation substrate, wherein each sensing unit comprises a touch / separation type friction nanogenerator arranged on the front surface of the insulation substrate, and a thin film transistor arranged on the back surface of the insulation substrate and opposite to the friction nanogenerator; each friction nanogenerator is electrically connected with a gate of the corresponding thin film transistor through a conductive material filling a via hole in the insulation substrate; and a sensing signal of each sensing unit is achieved through currents flowing between a source and a drain of the corresponding thin film transistor. The active touch sensor provided by the invention has the advantages of simple preparation process, wide material selection range and low cost, can satisfy the requirements for large-scale commercialization, and achieves high promotion and application values.

Description

technical field [0001] The invention relates to the technical fields of triboelectronics and sensors, in particular to an active tactile sensor. Background technique [0002] In the past period of time, active tactile sensing systems have received continuous and extensive attention due to their own sensing characteristics that can mimic tactile functions, and have been widely used in smart wearable devices, human-computer interaction interfaces and real-time medical treatment. field of health monitoring. The tactile sensor is the core component of the whole active tactile sensing system, and many principles are used to prepare the tactile sensor. [0003] Although a variety of tactile sensor development schemes have been proposed, most of them belong to the laboratory stage, and usually use high-cost nanomaterials, complex vacuum preparation techniques and cumbersome photolithography methods. It is still a difficult problem to prepare a commercial tactile sensing system on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81B3/00
CPCB81B3/0027
Inventor 张弛王中林杨智伟
Owner BEIJING INST OF NANOENERGY & NANOSYST
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